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Number of nX7 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically
1

%I #5 Mar 31 2012 12:37:14

%S 81,6561,165783,3227589,48992069,659747611,8138711727,95444167901,

%T 1083046694943,12066441712663,133097165591799,1461908430267595,

%U 16040101557258779,176117037501045883,1936527748635116761

%N Number of nX7 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically

%C Column 7 of A206936

%H R. H. Hardin, <a href="/A206935/b206935.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..1..1..1..0..1..1..0....1..0..0..1..1..0..1....1..1..1..0..0..1..0

%e ..0..1..1..0..0..1..0....0..0..1..0..1..0..0....0..1..0..1..1..0..1

%e ..1..0..0..1..1..1..0....1..1..0..0..1..1..0....0..0..1..0..0..1..0

%e ..0..0..1..0..0..1..0....0..0..1..1..0..0..1....1..1..0..0..1..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 13 2012